—Yesterday Jim spent 7 hours in playing_爱下问搜题

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问题选择题

—Yesterday Jim spent 7 hours in playing computer games; he even didn't do his homework.

—Don't scold him. ___, he is a child. [ ]

A. After all

B. At all

C. In all

D. Above all

答案

答案：A

选择题

下列等式成立的是（　　）

A．（-3）^-2=-9

B．（-3）^-1=-

C．（ab）^-2=ab^-2

判断题

风险指特定情况和特定时期内，某种或某些不利事件所导致损失的可能性，因此，可将风险理解为不利的、不测的或不确定的事件，或理解为“事件”将要发生的概率。